JP2585353Y2 - Revolving superstructure of construction equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to the structure of an upper revolving structure of a construction machine such as a hydraulic shovel or a working vehicle.

[0002]

2. Description of the Related Art A bumper structure according to an embodiment of the prior art provided on an upper swing body of a hydraulic excavator is described in Japanese Utility Model Laid-Open No. 5-32451. In the prior art, a bumper, an occupant protection frame, a lighting device, or the like is detachably attached to the front portion of the upper revolving superstructure.

[0003]

[Problem to be Solved by the Invention] When the excavator is excavating just below the front in proximity to the upper revolving superstructure,
Long rods and rocks raked into the bucket could damage the lower front part of the upper structure. Also, in recent cabs for cabs, various considerations have been taken so as to expand the field of view from the upper part to the lower part in order to check the work situation, and to attach other equipment along with the bumper to the lower part on the front side of the upper revolving structure. However, it is not sufficient from the viewpoint of the arrangement space of equipment, maintainability, or protection of equipment.

In a construction machine provided with an upper revolving structure above a lower traveling structure and a cab for a driver's cab on one side of a front portion of the upper revolving structure, the cab is connected to a lower portion of the upper revolving structure. The cab is mounted such that the lower surface of the cab protrudes forward by a predetermined dimension from the front end of the side frame constituting one side, and the space formed by the front end of the side frame and the lower surface of the cab is mounted on the equipment. A space for class arrangement was provided, and a protector covering an open portion of the space was detachably attached.

[0005]

In the side frame on which the cab is mounted, the lower surface of the cab projects slightly forward from the tip of the side frame, so that the field of view extending from above to below the front of the cab can be expanded. . Since the detachable protector that can withstand the collision of an obstacle is provided in the space between the side frame tip and the cab front lower surface, the front lower portion of the cab can be sufficiently protected. When the protector is damaged, it can be easily replaced. In addition, since the protector can be easily removed, the maintenance work on the lower side of the cab can be easily performed. In addition, various devices are installed in the space between the end of the side frame and the lower surface on the front side of the cab, and a removable protector surrounds the outer periphery of the various devices. Maintenance can be improved, and the space can be effectively used.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a side view of a hydraulic excavator having an upper swing body according to an embodiment of the present invention. In the figure, 1 is a lower traveling body of a hydraulic shovel, 2 is an upper revolving superstructure, 3L, 3
R (3R is the opposite side of 3L and is not shown in FIG. 1) is the left and right side frames constituting the lower side of the upper swing body 2, 4 is the cab for the cab, 5 is A protector 6 is a work attachment mounted on a front portion of the upper swing body 2, and a bucket 7 is mounted on a tip of the work attachment 6. FIG. 2 is a detailed view of a portion A in FIG. In the drawing, reference numeral 8 denotes a front end portion of the side frame 3L, 9 denotes a front lower surface portion of the cab 4, and 10 denotes a working light which is one of devices mounted on a hydraulic shovel. FIG.
FIG. 2 is a front view showing the protector 5 viewed from B in FIG. 1. In the figure, reference numeral 11 denotes a light emitting window hole for a work light provided in the protector 5, and reference numeral 12 denotes a protector provided in a front end corner of the side frame 3R. FIG. 4 is a plan view showing the protector 5 as viewed from C in FIG. FIG. 5 shows the protector 5
It is a perspective view of. In the figure, reference numerals 13 and 14 denote brackets for fixing the protector 5 to the upper swing body 2.
FIG. 6 is a perspective view of the protector 12.

Next, an upper revolving structure according to an embodiment of the present invention will be described with reference to FIGS. In this embodiment, the upper swing body 2
The lower surface of the cab 4 protrudes forward by a dimension L (shown in FIG. 2) from the distal end portion 8 of the side frame 3L constituting the lower side of the cab 4, and a space portion (FIG. 1 and FIG. 2 is a space portion where the protector 5 is not attached), and a space portion between the front lower surface portion 9 of the cab 4 and the front end portion 8 of the side frame 3L is provided at a lower front portion of the cab 4. Protector 5 for protecting
Are provided detachably. Also 3L side frame
A work light 10 or other equipment (not shown in some of the hydraulic equipment and electric equipment) is attached to a space a between the front end part 8 and the front lower surface part 9 of the cab 4. .

Next, the operation of the upper rotating body according to the embodiment of the present invention will be described. In the present invention, the lower surface of the cab 4 is provided so as to protrude forward by the dimension L from the front end portion 8 of the side frame 3L, so that the field of view extending from above to below the front of the cab 4 can be expanded. Since the detachable protector 5 that can withstand the collision of an obstacle is provided in the space a between the front end portion 8 of the side frame 3L and the front lower surface portion 9 of the cab 4, the front lower portion of the cab 4 is sufficiently provided. Can be protected. When the protector 5 is damaged, it can be easily replaced. Further, since the protector 5 can be easily removed, maintenance work on the lower side of the cab 4 can be easily performed. In addition, devices such as the work light 10 are mounted in the space a extending over the front end portion 8 of the side frame 3L and the front lower surface portion 9 of the cab 4, but the outer peripheral side of the device such as the work light 10 is detachable. Since the protectors 5 are surrounded, they can be sufficiently protected and the maintenance of the equipment can be ensured.

[0009]

[Effects of the Invention] In the upper revolving structure of the construction machine of the present invention, the lower surface of the cab is provided so as to slightly project forward from the tip of the side frame on the side frame on which the cab is mounted. The view from the upper front to the lower front of the cab can be widened. Since the detachable protector that can withstand the collision of an obstacle is provided in the space between the side frame tip and the cab front lower surface, the front lower portion of the cab can be sufficiently protected. When the protector is damaged, it can be easily replaced. In addition, since the protector can be easily removed, the maintenance work on the lower side of the cab can be easily performed. In addition, various devices are mounted in the space between the side frame front end and the lower surface on the front side of the cab.The removable protector surrounds the outer periphery of the various devices, so that the devices are sufficiently protected and these devices are protected. The maintenance of the space can be improved, and the space can be effectively used. Further, by providing a protector in the space, the external design of the upper-part turning body can be further improved.

[Brief description of the drawings]

FIG. 1 is a side view of a hydraulic excavator having an upper swing body according to an embodiment of the present invention.

FIG. 2 is a detailed view of a portion A in FIG.

FIG. 3 is a front view showing the protector as viewed from B in FIG. 1;

FIG. 4 is a plan view showing the protector as viewed from C in FIG. 1;

FIG. 5 is a perspective view of the protector 5;

FIG. 6 is a perspective view of the protector 12. FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower traveling body 2 Upper revolving superstructure 3L, 3R Side frame 4 Cab 5, 12 Protector 6 Work attachment 7 Bucket 8 Tip part (of side frame 3L) 9 Front lower surface part (of cab 4) 10 Work light 11 Light emitting window hole Department

Claims (1)

(57) [Scope of request for utility model registration] 1. An upper revolving structure is provided above a lower traveling structure,
In construction machines equipped with the cab of the cab on the front one side of the upper rotating body, the cab from the tip portion of the side frame constituting the lower one side of the upper rotating body, protruding lower surface of the cab forward by a predetermined distance
So that the tip of the side frame and the key
The space formed by the lower surface of the catcher blanking empty <br/> between unit for equipment arrangement, upper revolving construction machine, wherein a protector for covering the open portion of the space portion is mounted detachably
Body .